1. High-quality material: Stainless steel ring made from high-quality raw materials. Resists rust and corrosion, high hardness, environmentally friendly. Suitable for various environments. 2. Easy to install: Drill 4 holes and secure with bolts on wood or concrete. One-piece design allows quick installation within minutes. 3. Super strength: Load capacity up to 500 kg. The spring helps reduce impact. The hook rotates 360 degrees to prevent tangling and twisting. 4. Widely used: Ideal for hanging swing chairs, porch swings, rocking chairs, sandbags, or other heavy objects using overhead brackets. Product Name: Hanging Chair Hook Color: Silver Material: Stainless Steel Size: M8 hook - length 8 cm; M8 spring button - length 8 cm; M8 rotating ring - length 8.7 cm; Tension spring - length 10.8 cm, width 4 cm; Self-tapping screws - length 5 cm, diameter 0.48 cm Package Dimensions: 120 x 80 x 50 mm Package Contents: 1 x M8 hook, 1 x M8 spring button, 1 x M8 rotating ring, 1 x tension spring, 8 x self-tapping screws. Only the listed contents included, additional items not part of the package. Note: Lighting and display settings may cause slight color differences between the image and actual product. Measurement may vary by +/- 1-3 cm.